PHP Functions Easy Questions and Answers

What will be the output of the following PHP code?

<?php
echo(atan(0.60));
?>

The atan() function returns the arc tangent of arg as a numeric value between -Pi/2 and Pi/2 radians.

What will be the output of the following PHP code?

<?php
echo chr(51);
?>

The chr() function returns a character from the specified ASCII value. Since the ASCII value of 3 is 51, thus 3 was displayed.

What will be the output of the following PHP code?

<?php
echo ord ("Rahul");
?>

The ord() function returns the ASCII value of the first character of a string. The ASCII value of R is 82, thus 82 was displayed.

What will be the output of the following PHP code?

<?php
function fun($message)
    {
      echo "$message";
    }
$var = "fun";
$var("Executed...");
?>

It is possible to call a function using a variable which stores the function name.

What will be the output of the following PHP code?

<?php
define("GREETING","Welcome to interview mania!");
echo constant("GREETING");
?>

The define() function defines a constant.